Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/11147/7148

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Author: search.filters.author.Budak, MeralLanguage: search.filters.language.en

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  • Article
    Citation - WoS: 18
    Citation - Scopus: 21
    Evaluation of Heat Treated Clay for Potential Use in Intervention Mortars
    (Elsevier Ltd., 2010) Budak, Meral; Akkurt, Sedat; Böke, Hasan
    In this study, raw material compositions, basic physical, mineralogical, microstructural and hydraulic properties of lime mortars used in two selected historic buildings were determined by XRD, SEM-EDS and TGA analyses. The results showed that the mortars were hydraulic due to the use of pozzolanic aggregates. Taking into account the hydraulic characteristics of mortars due to the use of pozzolanic aggregates, the possibility of obtaining hydraulic mortars by using pozzolanic aggregates produced from heated commercial clays was investigated. For this purpose, four clay samples used in the ceramic industry in Turkey were heated at varying temperatures of 400, 450, 500, 550, 600, 800, and 1200°C with a heating rate of 10°C/min. Pozzolanic properties of heated clay samples were determined. The results showed that commercial clays studied are well suited for use as pozzolanic aggregates when they are heated between 500 and 700. °C. This is also confirmed by testing the compressive strengths of the three month aged laboratory-produced mortars that contained thermally treated clay (at 600°C) as pozzolanic aggregates. Compressive strength of this mortar was around 5. MPa which is satisfactorily high. © 2009 Elsevier B.V.
  • Article
    Citation - WoS: 10
    Citation - Scopus: 14
    Chemical Characterization of Cretan Clays for the Design of Restoration Mortars
    (Springer Verlag, 2008) Budak, Meral; Maravelaki-Kalaitzaki, Pagona; Kallithrakas-Kontos, Nikolaos
    Three clays and a marly-limestone from the West of Chania, Crete, fired at temperatures ranging from 200 to 1200°C, were characterized by XRD, FTIR, EDXRF and wet chemical analyses. The aim of this study was to assess the pozzolanic and hydraulic properties of these materials for potential use as binders in the design of restoration mortars. The mineralogical composition of the clays is quartz, illite, calcite, plagioclase, kaolinite and hematite. The identification of larnite and gehlenite in the calcined marly-limestone established it as potential cementious binder. Among the clays, one with low amount of calcite and considerable kaolinite content exhibited the best pozzolanic activity upon heating at 600°C. Therefore, it can be considered as an appropriate material for restoration purposes. It is deduced that the pozzolanic activity of fired clays is greatly dependent on the firing temperature and is enhanced in clays containing low calcite and high kaolinite amounts. © 2008 Springer-Verlag.